10020021230161 has 2 divisors, whose sum is σ = 10020021230162. Its totient is φ = 10020021230160.

The previous prime is 10020021230159. The next prime is 10020021230201. The reversal of 10020021230161 is 16103212002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7518119802561 + 2501901427600 = 2741919^2 + 1581740^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020021230161 - 2¹ = 10020021230159 is a prime.

Together with 10020021230159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10020021230861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010010615080 + 5010010615081.

It is an arithmetic number, because the mean of its divisors is an integer number (5010010615081).

Almost surely, 2^{10020021230161} is an apocalyptic number.

It is an amenable number.

10020021230161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020021230161 is an equidigital number, since it uses as much as digits as its factorization.

10020021230161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 10020021230161 its reverse (16103212002001), we get a palindrome (26123233232162).

The spelling of 10020021230161 in words is "ten trillion, twenty billion, twenty-one million, two hundred thirty thousand, one hundred sixty-one".